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प्रश्न
Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
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उत्तर
Cross-pollination cannot occur in cleistogamous flowers. Cleistogamous flowers do not open at all. In these flowers, the anthers and stigma are close together; when the anthers dehisce in the flower buds, pollen grains touch the stigma, resulting in pollination. As a result, these flowers are always self-pollinated since they remain closed, and cross pollen cannot land on the stigma. Cleistogamous flowers can pollinate and set seeds without pollinators.
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संबंधित प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
As a senior biology student you have been asked to demonstrate to the students of secondary level in your school, the procedure(s) that shall ensure cross-pollination in a hermaphrodite flower. List the different steps that you would suggest and provide reasons for each one of them.
Why angiosperm anthers are called dithecous?
What is the bagging technique?
Add a note on pollination mechanism in Salvia.
The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as ______.
Describe the structure of its microsporangium.
Can a unisexual flower be self pollinated?
Select and write the most appropriate answer from the given alternatives for the following subquestion:
A versatile anther is an adaptation for _______ type of pollination.
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Give one word/term for the following:
Pollination of flowers by insects.
Answer the following question.
Express the process of pollination in Vallisneria.
Describe pollination. How many types of pollinations are found?
Describe the Advantages and Disadvantages of self-pollination to the Plant.
Explain water pollination in detail with its types.
A dioecious flowering plant prevents both ______.
Pollination occurs in ______.
Both chasmogamous and cleistogamous flowers are present in ______.
Which of these is a condition that makes flowers invariably autogamous?
The flower which does not open at all are called ______.
Which one of these statements is incorrect?
The following statements seem to describe the water-pollinated submerged plants.
Which type of pollination does the figure indicate?
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is ______
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Which of the following floral adapation are adapted by hydrophilous flowers?
Bird pollinated flowers are usually ______.
